柱形障板条件下声矢量圆阵相位模态域目标方位估计  

Direction-of-arrival estimation based on phase modal space for a circular acoustic vector-sensor array on the cylindrical baffle

作　　者：朱晓春 朱中锐[1,2,3] 张旭 时胜国[1,2,3] ZHU Xiaochun;ZHU Zhongrui;ZHANG Xu;SHI Shengguo(National Key Laboratory of Underwater Acoustic Technology,Harbin Engineering University,Harbin 150001;Key Laboratory of Marine Information Acquisition and Security(Harbin Engineering University),Ministry of Industry and Information Technology,Harbin 150001;College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150001)

机构地区：[1]哈尔滨工程大学水声技术全国重点实验室,哈尔滨150001 [2]工业和信息化部海洋信息获取与安全工信部重点实验室(哈尔滨工程大学),哈尔滨150001 [3]哈尔滨工程大学水声工程学院,哈尔滨150001

出　　处：《声学学报》2024年第2期274-285,共12页Acta Acustica

摘　　要：提出了基于横向、纵向和对角排列的声压振速联合处理协方差矩阵构造的相位模态域最小方差无畸变响应(MVDR)目标方位估计方法。该方法利用弹性柱障散射声场模型,根据声矢量圆阵相位模态变换理论,构造声压与不同振速分量的互协方差矩阵,并进行相加、纵向、横向和对角排列得到扩展互协方差矩阵,将扩展互协方差矩阵分解重构后进行MVDR目标方位估计。理论分析与仿真结果表明,纵向排列互协方差矩阵具有更好的方位估计性能,相加互协方差矩阵具有较低的背景谱,对角和横向排列相对纵向排列较差。水池试验和湖试结果进一步验证了纵向排列互协方差矩阵具有较其他3种方法更好的方位估计性能。A method is introduced for estimating the target azimuth in the phase mode domain using the minimum variance distortionless response(MVDR)technique.The approach relies on joint processing of sound pressure and velocity through a covariance matrix,arranged predominantly in vertical,horizontal,and diagonal configurations.Employing an acoustic field model with an elastic cylindrical baffle,this method transforms the phase mode of an acoustic vector circular array.Subsequently,mutual covariance matrices of sound pressure and velocity components from distinct points are generated.Extensive cross-covariance matrices are calculated with additive summation,arranged vertically,horizontally,and diagonally,then decomposed to achieve target azimuth estimation using MVDR.Theoretical analysis and numerical simulations indicate that the vertically arranged crosscovariance matrix delivers the most accurate azimuth estimation,while the additive covariance matrix exhibits the least background noise.Nevertheless,the horizontal and diagonal arrangements show inferior performance compared to the vertical arrangement.Pool and lake experiments further confirm the superior performance of the vertically arranged approach.

关 键 词：声矢量圆阵 柱障 相位模态域 声压振速联合处理 波达方位估计 

分 类 号：TB5[理学—物理]